Vibrating tuning fork of frequency n is placed near the open end of a – McqOptions

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1.	Vibrating tuning fork of frequency n is placed near the open end of a long cylindrical tube. The tube has a side opening and is fitted with a movable reflecting piston. As the piston is moved through 8.75 cm, the intensity of sound changes from a maximum to minimum. If the speed of sound is 350 m/s. Then n is
A.	500 Hz
B.	1000 Hz
C.	2000 Hz
D.	4000 Hz
Answer» C. 2000 Hz

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